Patents by Inventor Siegfried E. Koehle

Siegfried E. Koehle has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Bevel end protector
    Patent number: 4630646
    Abstract: A bevel end protector for protecting the bevel end of a pipe includes an expansible portion inserted into the pipe. The protector is provided with a portion which can be expanded outwardly to secure the protector within the pipe by application of a force thereto using a removable cooperating element.
    Type: Grant
    Filed: October 22, 1985
    Date of Patent: December 23, 1986
    Assignee: Berg Steel Pipe Corp.
    Inventor: Siegfried E. Koehle